<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 *
 * @version $Id: text_plain__external.inc.php 10239 2007-04-01 09:51:41Z cybot_tm $
 */

/**
 *
 */
function PMA_transformation_text_plain__external_nowrap($options = array()) {
	if (!isset($options[3]) || $options[3] == '') {
		$nowrap = true;
	} elseif ($options[3] == '1' || $options[3] == 1) {
		$nowrap = true;
	} else {
		$nowrap = false;
	}

	return $nowrap;
}

function PMA_transformation_text_plain__external($buffer, $options = array(), $meta = '') {
	// possibly use a global transform and feed it with special options:
	// include './libraries/transformations/global.inc.php';

	// further operations on $buffer using the $options[] array.

	$allowed_programs = array();

	//
	// WARNING:
	//
	// It's up to administrator to allow anything here. Note that users may
	// specify any parameters, so when programs allow output redirection or
	// any other possibly dangerous operations, you should write wrapper
	// script that will publish only functions you really want.
	//
	// Add here program definitions like (note that these are NOT safe
	// programs):
	//
	//$allowed_programs[0] = '/usr/local/bin/tidy';
	//$allowed_programs[1] = '/usr/local/bin/validate';

	// no-op when no allowed programs
	if (count($allowed_programs) == 0) {
		return $buffer;
	}

	if (!isset($options[0]) ||  $options[0] == '' || !isset($allowed_programs[$options[0]])) {
		$program = $allowed_programs[0];
	} else {
		$program = $allowed_programs[$options[0]];
	}

	if (!isset($options[1]) || $options[1] == '') {
		$poptions = '-f /dev/null -i -wrap -q';
	} else {
		$poptions = $options[1];
	}

	if (!isset($options[2]) || $options[2] == '') {
		$options[2] = 1;
	}

	if (!isset($options[3]) || $options[3] == '') {
		$options[3] = 1;
	}

	// needs PHP >= 4.3.0
	$newstring = '';
	$descriptorspec = array(
		0 => array("pipe", "r"),
		1 => array("pipe", "w")
	);
	$process = proc_open($program . ' ' . $poptions, $descriptorspec, $pipes);
	if (is_resource($process)) {
		fwrite($pipes[0], $buffer);
		fclose($pipes[0]);

		while (!feof($pipes[1])) {
			$newstring .= fgets($pipes[1], 1024);
		}
		fclose($pipes[1]);
		// we don't currently use the return value
		$return_value = proc_close($process);
	}

	if ($options[2] == 1 || $options[2] == '2') {
		$retstring = htmlspecialchars($newstring);
	} else {
		$retstring = $newstring;
	}

	return $retstring;
}
?>
